partially reverted change that generally checked for None on object indexing -...

partially reverted change that generally checked for None on object indexing - seems to trigger crashes in Py3.2 for some reason

Cython/Compiler/ExprNodes.py

@@ -2663,7 +2663,6 @@ class IndexNode(ExprNode):
                 self.base = self.base.coerce_to_pyobject(env)
                 base_type = self.base.type
             if base_type.is_pyobject:
-                self.base = self.base.as_none_safe_node("'NoneType' object is unsubscriptable")
                 if self.index.type.is_int:
                     if (not setting
                         and (base_type in (list_type, tuple_type))
@@ -2686,6 +2685,8 @@ class IndexNode(ExprNode):
                 elif is_slice and base_type in (bytes_type, str_type, unicode_type, list_type, tuple_type):
                     self.type = base_type
                 else:
+                    if base_type is dict_type:
+                        self.base = self.base.as_none_safe_node("'NoneType' object is unsubscriptable")
                     self.type = py_object_type
             else:
                 if base_type.is_ptr or base_type.is_array: